What’s on tap

*Mayor Emanuel is scheduled to visit new full-day pre-K classrooms at a South Side elementary school.

*Gov. Bruce Rauner has no public events scheduled.

*Lt. Gov. Evelyn Sanguinetti is scheduled to attend the Chicago Police Memorial Foundation’s a candlelight vigil at Soldier Field for police officers who have died in the line of duty.

From the notebook

*Raoul goes after Harold on same-sex marriage: Democratic attorney general candidate Raoul is going after Republican opponent Erika Harold over her 2014 support for a federal constitutional amendment to ban same-sex marriage.

In a new ad from the Democratic state senator from Chicago, a narrator says Harold, an attorney from Urbana, “supports a constitutional ban on same-sex marriage and would even allow employers to fire workers, just for being gay.”

“Kwame Raoul believes children must be protected from abusers, and everyone should be treated equally no matter who you love,” the narrator says.

The ad cites Harold’s response to a questionnaire she filled out for the Champaign News-Gazette as a Republican candidate for Congress.

“Given the Supreme Court’s invalidation of Section 3 of the Defense of Marriage Act, I would support an amendment defining marriage as being between one man and one woman,” she wrote. (Rick Pearson)

*Team Rauner hits J.B. Pritzker on vehicle mileage tax: Republican Gov. Bruce Rauner’s campaign is out with a new ad attacking the potential of a new vehicle mileage tax from Democratic challenger J.B. Pritzker.

In the new Rauner ad, a woman identified as “Denise Smith” warns that Pritzker “wants a car tax which will also come along with a tracking device.”

Pritzker floated the idea in January for a tax based on miles traveled as a potential way to fund a new capital bill to pay for public works including roads and bridges. Pritzker told the Daily Herald the idea was worth “exploring” but has since said he was open to ideas on how to pay for a capital bill and wasn’t wedded to a vehicle mileage tax. (Rick Pearson)